Common clothes wrapped round a Roman (5)
I believe the answer is:
togas
'common clothes wrapped round a roman' is the definition.
I can't judge whether this defines the answer.
'common clothes wrapped round' is the wordplay.
'common' becomes 'a' (I can't explain this - if you can you should give a lot more credence to this answer).
'clothes' becomes 'togs' (togs can informally mean clothing).
'wrapped round' means one lot of letters goes inside another.
'a' placed into 'togs' is 'TOGAS'.
Can you help me to learn more?
(Other definitions for togas that I've seen before include "What some ancient citizens wore" , "clothing" , "garments worn by ancient Romans" , "Roman garments" .)